Injection-molding-grade nylon 6 composite material and application thereof

A composite material, injection molding technology, applied in the field of nylon materials, can solve problems such as inability to demold, and achieve the effects of excellent dimensional stability, rapid demoulding, and excellent cold resistance and heat resistance.

Inactive Publication Date: 2014-12-03
上海日晶工程塑料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, although some nylon 6 products hope to increase the adhesive force to solve the problem of falling off, although they can achieve bonding with zinc-based alloys, there is also bonding between the nylon 6 material and the mold, resulting in the inability to release the mold

Method used

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  • Injection-molding-grade nylon 6 composite material and application thereof
  • Injection-molding-grade nylon 6 composite material and application thereof
  • Injection-molding-grade nylon 6 composite material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055]

[0056] Wherein, the POE-g-MAH graft copolymer is first made into a 30wt% masterbatch with some nylon 6, and then mixed.

[0057] After the above components are mixed, they are extruded through a twin-screw extruder, injected into the inner wall of the ring-shaped zinc-based alloy, and molded, wherein the holding time is 2-3s. After demolding, there is no phenomenon of locking the mold. It only takes 16.5s to complete the injection molded parts.

[0058] After cooling, the resin layer and the zinc-based alloy did not detach. Heating to 90°C (holding for 2h), then cooling to 30°C (holding for 2h), and performing 10 cycles showed no trace of linear separation between the resin layer and the zinc-based alloy.

Embodiment 2

[0060]

[0061]

[0062] Wherein, the POE-g-MAH graft copolymer is first made into a 30wt% masterbatch with some nylon 6, and then mixed.

[0063] After the above components are mixed, they are extruded through a twin-screw extruder, injected into the inner wall of the ring-shaped zinc-based alloy, and molded, wherein the holding time is 2-3s. After demolding, there is no phenomenon of locking the mold.

[0064] After cooling, the resin layer and the zinc-based alloy did not detach. Heating to 90°C (holding for 2h), then cooling to 30°C (holding for 2h), and performing 10 cycles showed no trace of linear separation between the resin layer and the zinc-based alloy.

Embodiment 3

[0066]

[0067] Wherein, the POE-g-MAH graft copolymer is first made into a 30wt% masterbatch with some nylon 6, and then mixed.

[0068] After cooling, the resin layer and the zinc-based alloy did not detach. Heating to 90°C (holding for 2h), then cooling to 30°C (holding for 2h), and performing 10 cycles showed no trace of linear separation between the resin layer and the zinc-based alloy.

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Abstract

The invention provides an injection-molding-grade nylon 6 composite material which comprises the following components in parts by weight: 65-90 parts of nylon 6 resin, 1-20 parts of first maleic anhydride graft copolymer, 0.1-10 parts of second maleic anhydride graft copolymer and 0.01-5 parts of nucleating agent. The injection-molding-grade nylon 6 composite material fills the blank in the injection-molding-grade nylon for special-function pieces, has favorable bonding property with zinc-base alloy materials, and can implement quick stripping in the injection molding process; and the prepared part has stable size, keeps stable in the alternating temperature experiment of 90 DEG C (2 hours) to 30 DEG C (2 hours), and widens the application range of the nylon 6.

Description

technical field [0001] The invention relates to a nylon (polyamide) material, in particular to an injection molding grade nylon 6 composite material and its application. Background technique [0002] In the nylon series, nylon 6 and nylon 66 are the most important varieties. After polymerization and granulation, most of them are raw chips (ie basic raw materials), and they are also crystalline materials, which can be used for blown film, extrusion, coating and injection molding. However, if the above materials are not improved, the crystallization speed of the part will be slow during injection molding, and the demoulding by cooling (and easy to stick to the mold) will not only reduce the production efficiency, but also cause large shrinkage and serious warping deformation of the part, which cannot achieve satisfactory quality. high cost. The improved injection molding grade material can be quickly released from the mold, with high production efficiency, no subsequent warpi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L51/00C08L51/06C08K13/06C08K9/06C08K3/36C08K5/098C08K5/42C08K3/30C08K3/34C08K3/26B29C69/02B29C45/14B29C43/00
CPCC08L77/02B29C43/00B29C45/14B29C69/02C08K2201/005C08K2201/014C08L2205/025C08L2205/035C08L2205/24C08L51/003C08L51/06C08K13/06C08K9/06C08K3/36C08K5/098C08K5/42C08K3/34C08K5/20
Inventor 徐奔徐文权
Owner 上海日晶工程塑料科技有限公司
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